If people are afraid to upload information, share knowledge and tell others what is really happening because they worry that as they do so their presence and their words are being tracked, then we will know less in future. We know less because fear will hold people back.

For those over the years who say they support freedom of expression but with opt outs, or who have argued that freedom of expression doesn't extend to articles, photographs or cartoons which offend them, it should be made clear that freedom of expression gives everyone the chance to debate opinions, and that right is vital.